A Tennessee man, Marvin Potter (on the right), is in police custody tonight, charged with two counts of first degree murder in the shooting deaths of a couple who had unfriended his 30-year-old daughter on the popular social site.

The murderous spat began when Billy Payne Jr. and his girlfriend, Billie Jean Hayworth, unfriended Potter's 30-year-old daughter Jenelle. According to police, Jenelle began harassing the couple in the week leading up to the shooting on January 31st.

Authorities believe that at some point between 5:30am and 11am that day, Marvin Potter entered the couple's Mountain City home and shot the pair—Billy Payne in his bedroom and Billie Jean in their 8-month-old daughter's room. Billie Jean was found holding her infant in her arms when a neighbor made the grisly discovery.

Jamie Curd (on the left), a friend of the Potter's and reportedly romantically interested in Jenelle, was charged as an accessory to the crime. Both men remain jailed, Potter on $200,000 bail and Curd on $1.5 million. [Yahoo]